Weber, Steven. The Political Economy of Open Source Software, June 1, 2000. (Recent Work, Berkeley Roundtable on the International Economy, UC Berkeley).http://escholarship.org/uc/item/3hq916dc
(accessed November 15, 2012).

DESIGN THEORY

Alberti, Leon Battista. On the Art of Building in Ten Books (MIT Press, 1988), 318.